Download the installation medium
Depending on the desired installation environment download either the ISO image for the live environment or the bootstrap image for installing from an existing Linux system.
It is recommended to verify the image signature before use, especially when downloading from an HTTP mirror, because mirrors could be malicious and HTTP is vulnerable to man-in-the-middle attacks (unless you use HTTPS).
gpg --keyserver pgp.mit.edu --keyserver-options auto-key-retrieve --verify archlinux-<version>-x86_64.iso.sig
pacman-key -v archlinux-<version>-x86_64.iso.sig from an existing Arch Linux installation as root.
Keep in mind:
- The signature itself could be manipulated if it is downloaded from a mirror site, instead of from archlinux.org as above. In this case, ensure that the public key, which is used to decode the signature, is signed by another, trustworthy key. The
gpgcommand will output the fingerprint of the public key.
- Another method to verify the authenticity of the signature is to ensure that the public key's fingerprint is identical to the key fingerprint of the Arch Linux developer who signed the ISO-file. See Wikipedia:Public-key cryptography for more information on the public-key process to authenticate keys.
Arch Linux can be installed from two environments:
- Live environment
- The live environment can be booted from a USB flash drive, an optical disc or a network with PXE.
- Pointing the current boot device to a drive containing the Arch installation media is typically achieved by pressing a key during the POST phase, as indicated on the splash screen. Refer to your motherboard's manual for details.
- When the Arch menu appears, select Boot Arch Linux and press
Enterto enter the installation environment.
- See README.bootparams for a list of boot parameters, and packages.x86_64 for a list of included packages.
- Existing Linux system
- Instead of using the live environment, Arch Linux can also be installed from an existing Linux system.
Special installation methods
If you intend to install Arch Linux as the sole operating system on the computer, on bare-metal, with physical access and an internet connection, you can skip this section.
- Virtual machine
- Arch Linux can be installed in a virtual machine, ideal for learning and testing. See also Moving an existing install into (or out of) a virtual machine and Arch Linux VPS.
- Via SSH
- Once the live environment is booted and SSH is started and enabled for root, the installation can be completed via SSH.